KR940004483B1 - Multi-layer head for hdd - Google Patents

Multi-layer head for hdd Download PDF

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Publication number
KR940004483B1
KR940004483B1 KR1019910021540A KR910021540A KR940004483B1 KR 940004483 B1 KR940004483 B1 KR 940004483B1 KR 1019910021540 A KR1019910021540 A KR 1019910021540A KR 910021540 A KR910021540 A KR 910021540A KR 940004483 B1 KR940004483 B1 KR 940004483B1
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KR
South Korea
Prior art keywords
head
input data
magnetic layer
gap
diskette
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Application number
KR1019910021540A
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Korean (ko)
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KR930010864A (en
Inventor
장정환
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삼성전자 주식회사
정용문
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Priority to KR1019910021540A priority Critical patent/KR940004483B1/en
Publication of KR930010864A publication Critical patent/KR930010864A/en
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Publication of KR940004483B1 publication Critical patent/KR940004483B1/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/147—Structure or manufacture of heads, e.g. inductive with cores being composed of metal sheets, i.e. laminated cores with cores composed of isolated magnetic layers, e.g. sheets

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Digital Magnetic Recording (AREA)

Abstract

The head body (1) includes a pair of magnetic heads (2,3) having different magnetic gaps. At first, the input data with low frequency is applied to both of cores (13,14). The electromagnetic field generated at the large gap is stronger than that of the small gap so that the input data is written on a magnetic layer (6) deeply. Secondly, the electromagnetic field generated at the small gap is weaker than that of the large gap when the input data with high frequency is applied to the cores. Then second input data is written on the magnetic layer narrowly. The magnetic head with a large gap has the erase function of the written data on the magnetic layer.

Description

HDD 및 FDD에서 다층 기록 가능한 헤드Multi-layer recordable head from HDD and FDD

제1도는 종래기술의 FDD의 실시예시도.1 is an exemplary embodiment of a prior art FDD.

제2도는 종래기술의 HDD의 실시예시도.2 is a diagram showing an embodiment of a prior art HDD.

제3도는 본 발명의 헤드구조도.3 is a head structure diagram of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 헤드뭉치 3 : 헤드1: head bundle 3: head

4, 5 : 갭 6 : 디스켓4, 5: gap 6: diskette

7 : 자화층7: magnetization layer

본 발명은 HDD 및 FDD의 헤드에 관한 것으로써, 특히 헤드의 갭을 서로 다른쪽을 갖도록 하여 동일면적을 갖는 디스켓의 자성층에 기록되는 입력데이타의 기록밀도를 향상시킬 수 있도록 한 헤드에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the heads of HDDs and FDDs, and more particularly, to heads having different head gaps to improve the recording density of input data recorded on magnetic layers of diskettes having the same area.

현재 사용되어지고 있는 HDD 및 FDD에서 리드/라이트 기능을 갖게 되는 헤드(10)는 좁은 거리의 캡(11)을 형성하여 상기 동일 캡을 갖는 헤드를 양면으로 자성층을 갖는 디스켓(12)에 위치하도록 하여 입력데이타를 기록함과 동시에 기록된 데이타를 읽어 내도록 하였다.The head 10 having the read / write function in the HDD and the FDD currently being used forms a narrow distance cap 11 so that the head having the same cap is located on the diskette 12 having a magnetic layer on both sides. The system records the input data and reads the recorded data.

상기와 같은 헤드(10)에 의한 포화기록방식은 기록 최단 파장(λ)과 헤드의 갭거리(g)와 디스켓의 자성층 두께(δ)의 관계는 g 또는 δ=λ/4로써 디스켓(12)의 자성층 두께(δ)와 헤드갭의 거리는 거의 같은 값으로 설계되어야 하며 두 값의 결정에 따라 기록밀도인 기록파장(λ)이 결정되어진다.In the saturation recording method using the head 10 as described above, the relationship between the recording shortest wavelength?, The head gap distance g, and the magnetic layer thickness? Of the diskette is g or? The thickness of the magnetic layer δ and the distance between the head gap should be designed to be almost the same value, and the recording wavelength λ, which is the recording density, is determined by the determination of the two values.

따라서 포화기록은 자성층 두께와 헤드갭의 거리가 약간 오차가 있더라도 자성층 두께 전체를 포화하여 기록되어져 한번 기록된 위치에 소거후 오버라이트가 가능하다.Therefore, even if the distance between the magnetic layer thickness and the head gap is slightly different, the saturation recording is recorded by saturating the entire thickness of the magnetic layer so that it can be overwritten after erasing at the recorded position.

일반적으로 자기 기록방법으로 HDD 및 FDD의 기본적인 기록 재생 원리는 선행 기술에 개시되어 있다.In general, the basic recording and reproducing principle of HDD and FDD as a magnetic recording method is disclosed in the prior art.

상기와 같은 종래 기술에 의한 헤드는 디스켓의 자성층에 포화되게 기록함으로써, 동일 면적에 입력데이타의 기록밀도를 높일 수 없었다.As described above, the head according to the prior art is saturated in the magnetic layer of the diskette, and thus the recording density of the input data cannot be increased in the same area.

본 발명은 상기와 같은 문제점을 감안하여 안출한 것으로써, 본 발명에 따른 목적은 동일면적을 갖는 디스켓의 자성층에 다층으로 기록할 수 있도록 하는데 본 발명의 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to enable recording in multiple layers on a magnetic layer of a diskette having the same area.

상기와 같은 목적을 달성하기 위한 본 발명의 기술적 구성을 첨부된 도면에 의거 상세히 설명하면 다음과 같다.When described in detail based on the accompanying drawings the technical configuration of the present invention for achieving the above object.

하나의 헤드뭉치(1)내에 넓은 갭(4)을 갖는 헤드(2)와 폭이 좁은 갭(5)을 갖는 헤드(3)을 형성하여 상기 헤드(2)(3)의 서로 다른 주파수 대역에 의해 디스켓(6)의 자성층(7)이 입력데이타를 다층 기록할 수 있도록 구성한다.In one head bundle 1, a head 2 having a wide gap 4 and a head 3 having a narrow gap 5 are formed in different headbands of the head 2, 3. As a result, the magnetic layer 7 of the diskette 6 is configured to record multiple input data.

상기와 같이 구성된 본 발명의 작용효과를 살펴보면 다음과 같다.Looking at the effects of the present invention configured as described above are as follows.

하나의 헤드뭉치(1)에 서로 다른 갭을 갖는 헤드(2)(3)를 이용하여 디스켓(6)의 자성층(7)이 데이타를 기록 재생하게 되는데, 이때 넓은 갭(4)을 갖는 헤드(2)에 입력되는 데이타를 따른 저주파수가 제1코아와 제2코아에 감긴 코일에 인가되면 제1코아와 제2코아에 전자장이 발생하게 되는 것이며, 상기 전자장은 큰 갭(4)에 의해 크게 발생하여 디스켓(6)의 자성층(7)에 입력데이타가 제3도에서와 같이 입력되어지는 것이다.The magnetic layer 7 of the diskette 6 records and reproduces data by using the heads 2 and 3 having different gaps in one head bundle 1, wherein the head having a wide gap 4 When the low frequency along the data input to 2) is applied to the coil wound around the first core and the second core, an electromagnetic field is generated in the first core and the second core, and the electromagnetic field is largely generated by the large gap 4. Thus, the input data is input to the magnetic layer 7 of the diskette 6 as shown in FIG.

상기와 같이 큰 갭(4)을 갖는 헤드(2)에 의해 입력데이타를 기록한 후, 작은 갭(5)을 갖는 헤드(3)에 의해 다른 입력데이타를 입력시키게 되는데, 이때에는 입력데이타에 따른 고주파수를 제1코아(13)와 제2코아(14)에 감긴 코일에 인가시켜 제1코아(13)와 제2코아(14)에 전자장이 발생하게 되는 것이며, 이 전자장은 작은 갭(5)에 의해 전자장이 작게 형성됨으로써 입력데이타가 디스켓(6)의 자성층(7)에 제3도와 같이 입력되어지는 것이다.After the input data is recorded by the head 2 having the large gap 4 as described above, another input data is input by the head 3 having the small gap 5, in which case the high frequency according to the input data is obtained. Is applied to the coil wound around the first core 13 and the second core 14 to generate an electromagnetic field in the first core 13 and the second core 14, and the electromagnetic field is applied to the small gap 5. As the electromagnetic field is made small, input data is input to the magnetic layer 7 of the diskette 6 as shown in FIG.

또한 큰 갭(4)을 갖는 헤드(2)는 디스켓(6)에 기록한 입력데이타를 소거할 수 있는 기능을 수행할 수 있도록 하였다.In addition, the head 2 having the large gap 4 can perform the function of erasing the input data recorded on the diskette 6.

상기와 같이 살펴본 본 발명은 하나의 헤드뭉치에 서로 다른 갭을 갖도록 하여 서로 다른 주파수로 입력데이타를 디스켓의 자화층에 기록되도록 함으로써, 디스켓에 다층 기록을 가능케 하여 디스켓의 단위 면적당 기록용량을 증대시킨 발명인 것이다.As described above, the present invention has a different gap in one head so that the input data can be recorded in the magnetization layer of the diskette at different frequencies, thereby enabling multi-layer recording on the diskette, thereby increasing the recording capacity per unit area of the diskette. It is an invention.

Claims (2)

HDD 및 FDD의 헤드에 있어서, 하나의 헤드뭉치(1)내에 폭이 넓은 갭(4)을 갖는 헤드(2)와 폭이 좁은 갭(5)을 갖는 헤드(3)을 형성하여 상기 헤드(2)(3)의 서로 다른 주파수 대역에 의해 디스켓(6)의 자성층(7)에 데이타를 다층 기록할 수 있도록 함을 특징으로 하는 다층 기록 헤드.In the heads of the HDD and the FDD, a head 2 having a wide gap 4 and a head 3 having a narrow gap 5 are formed in one head bundle 1 to form the head 2. And (3) a multi-layer recording head characterized by enabling data to be multi-layered onto the magnetic layer (7) of the diskette (6) by different frequency bands. 제1항에 있어서, 상기 헤드(2)(3)는 디스켓(6)의 자성층(7)에 2층으로 기록함을 특징으로 하는 다층기록 헤드.A multi-layer recording head according to claim 1, wherein the head (2) is recorded in two layers on a magnetic layer (7) of a diskette (6).
KR1019910021540A 1991-11-28 1991-11-28 Multi-layer head for hdd KR940004483B1 (en)

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Application Number Priority Date Filing Date Title
KR1019910021540A KR940004483B1 (en) 1991-11-28 1991-11-28 Multi-layer head for hdd

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Application Number Priority Date Filing Date Title
KR1019910021540A KR940004483B1 (en) 1991-11-28 1991-11-28 Multi-layer head for hdd

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KR930010864A KR930010864A (en) 1993-06-23
KR940004483B1 true KR940004483B1 (en) 1994-05-25

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